SEARCH Articles Figures Tables Erythromycins peptidyltransferase inhibition Peptidyltransferase assay systems Peptidyltransferase center Peptidyltransferase center A loop sequence Peptidyltransferase center P loop sequence Peptidyltransferase center RNA23S, structure Peptidyltransferase inhibition Protein synthesis peptidyltransferase reaction Ribosome peptidyltransferase center Ribosome peptidyltransferase site